help with feats and charge rules

[Aloïsius]

Please help me ! I thought I knew the rules but...

1)Power Lunge, from Sword and Fist :
How does it work (I'm using an half-orc with a great axe and str 22 as exemple):
* Normal damage + twice your strength modifier (so 1d12 + 9 +12 damage )
* Weapon damage + twice your strength modifier (so 1d12 +12)
* Weapon damage + twice your strength modifier to damage (so 1d12 +18)
If you have a rhino hide armor, what damage are doubled when you use power lunge ?

2)Spring attack
If you are hasted, could you move, make a full attack(or a whirlwind attack), then move ?
If you are a weapon master, you can make a whirlwind attack as a standard attack : so could you use spring attack with whirlwind attack, even if not hasted ?

The feat says "when you are using the attack action with a melee weapon", could you use it unarmed, if you are a monk or even if you are not.

3)What is the difference between a charge and a partial charge. I don't understand : isn't a charge a standard action, which is the same as a partial action ?

 

[green slime]

The following answers are based on how this works IMC...

Please help me ! I thought I knew the rules but...

1)Power Lunge, from Sword and Fist :
How does it work (I'm using an half-orc with a great axe and str 22 as exemple):
* Normal damage + twice your strength modifier (so 1d12 + 9 +12 damage )
* Weapon damage + twice your strength modifier (so 1d12 +12)
* Weapon damage + twice your strength modifier to damage (so 1d12 +18)

great Axe (1d12) + twice (x2) your strength mod (+6)=1d12+12

If you have a rhino hide armor, what damage are doubled when you use power lunge ?

Rhino Hide armour "Doubles all damage", so I would interpret this as (given same example as above) twice your great axe (d12) + thrice (x3) your strength mod (+6) = 2d12 +18.

Of course this item may have errata.

2)Spring attack
If you are hasted, could you move, make a full attack(or a whirlwind attack), then move ?
If you are a weapon master, you can make a whirlwind attack as a standard attack : so could you use spring attack with whirlwind attack, even if not hasted ?

Whirl Attack is a full round action.

IF you are hasted, you can
partial action: move
Full round action: Whirlwind attack

OR
Full round action: Whirlwind attack
partial action: move

But as you point out, weapon masters may make whirlwind attacks as a standard action. So yes, they may move either before or after their wirlwind attack.

If hasted, they can move both before AND after their whirlwind attack.

The feat says "when you are using the attack action with a melee weapon", could you use it unarmed, if you are a monk or even if you are not.

I believe fists are melee weapons.

3)What is the difference between a charge and a partial charge. I don't understand : isn't a charge a standard action, which is the same as a partial action ?

Charge is a full round action, which allows you to move twice your speed in a straight line and make 1 attack:

From the SRD:[/]
Charge (Full)(AoO: Yes)
Description: The combatant must move before attacking, not after. The combatant must move at least 10 feet and may move up to double base speed. All
movement must be in a straight line, with no backing up allowed. The charge stops as soon as the combatant threatens the target. A combatant can't run past the
target and attack from another direction.
After moving, the combatant may make a single melee attack or a bull rush. The combatant gets a +2 bonus on the attack roll. The combatant also suffers a -2
penalty to AC for 1 round.
A lance deals double damage if employed by a mounted combatant in a charge.
A target can ready certain piercing weapons, setting them to receive charges by using the ready action against receiving a charge. A weapon of this type deals
double damage if the readied attack is successful.